内容摘要：Global warming is a big challenge for warm-blooded animals, which must maintain a constant body temperature to prevent their bodies from overheating.

Global warming is a big challenge for warm-blooded animals, which must maintain a constant body temperature to prevent their bodies from overheating.

He runs a traditional mixed farm, with cattle and pigs, alongside fields growing wheat, barley, peas and beans.But his old Cotswold farm buildings are now too small for modern farming, and he has let them out to Mrs Stead and several other small firms.

"Without diversification we'd really be struggling. I don't know a single farm business that isn't diversified," he said.Nearly three quarters of farmers (71%) now rely on some additional business, according to the government research, and this has risen from 61% since 2015.So what do most farmers turn to?

The report for the Department of Environment, Food and Rural Affairs (DEFRA) analysed farm incomes.Letting out buildings was the most common, followed by farm shops and B&Bs, camping and glamping sites.

Spas, wellness clinics, sports and health retreats also feature.

A new, more controversial, source of income is letting out fields to solar power companies.Back in Mull, family friends have put a memorial bench on the course at Tobermory, where they say Billy played every day after school and every weekend from the age of 12. They remember him as "some guy".

Family friend Olive Brown says: "Every December I do have a wee sad moment, thinking he's not here. All that potential, enthusiasm and ability got caught short."Colyn and other members of Olive Gordon's family visited Lockerbie in the days after the disaster. It was a shocking scene.

"I remember the crater, this huge hole, and these little bits all over the place. It just had this smell. My God, my sister was found here. Somewhere here," he says.In the weeks that followed, members of the local community came together to wash, press and package up the belongings of those who had died on the plane.